CNIT 155 FINAL PURDUE UNIVERSITY EXAM PREP 2026 PRACTICE QUESTIONS ACCURATE

CNIT 155 FINAL PURDUE UNIVERSITY
EXAM PREP 2026 PRACTICE QUESTIONS
ACCURATE
⫸ What is the Outcome?
// Assume user has entered Hello


int side;
int area;
side = int.Parse(txtSide.Text);
if (int.TryParse(txtSide.Text, out side) == false)
{
Messagebox.Show(" ...");
txtSide.Focus();
return;
}
area = side * side;
txtOutput.Text = area.ToString(); Answer: runtime error (line 3)


⫸ What is the Outcome?
// Assume user has entered five:


int side;
int area;

, if(int.TryParse(txtSide.Text, out side)== false)
{
Messagebox.Show(" Enter a whole number.");
txtSide.Focus();
return;
}
area = side * side;
txtOutput.Text = area.ToString(); Answer: Message will be displayed
and user can enter a valid input.


⫸ Fill in the blank.
Valid range is 16 to 90 (inclusive)


if (age < 16 ------- age > 90) // logical or
{
MessageBox.Show("Not a valid range.");
...
} Answer: ||


⫸ int n;
for (n = 1; n <= 10; n += 3)
{
...